On the seventh day of ovulation, non-pregnant women may not have any symptoms. Very few pregnant women may have bleeding from implantation and slight physical discomfort, but most of them have no obvious external changes, so it is still necessary to check the blood HCG level at the hospital to confirm whether they are pregnant: 1. Therefore, even if the woman has intercourse during ovulation, she may not have an egg to ovulate. Even if an egg is discharged, it may not be able to form a fertilized egg successfully, so the woman can have no change on the seventh day of intercourse during ovulation and will still have her next menstrual period over time; 2. If the fertilized egg enters the stage of implantation on the seventh day of intercourse, there may be bleeding from implantation and a small amount of vaginal bleeding is visible in the woman, but this phenomenon is not universal. The human chorionic gonadotropin in the woman’s body has just started to increase and there are no significant changes in her body status due to hormonal fluctuations. More sensitive women may experience lower abdominal cramping, nausea, frequent urination, breast tenderness, and elevated basal body temperature. At this time, the fertilized egg is very small and the uterus does not increase in size. Women who have intercourse on the seventh day of ovulation, if they need to confirm whether they are pregnant, it is not recommended to judge by their physical condition. It is recommended to check the blood HCG level at the hospital, and if it appears to be elevated, it may indicate successful conception.